Home / 84,749.20-127,123.80-70,925.20

Finding the Fourth Proportional to 84,749.20, 127,123.80 and 70,925.20

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Solution

The fourth proportional to 84,749.20, 127,123.80 and 70,925.20 is: 106,387.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,749.20 : 127,123.80 = 70,925.20 : x
  2. Step 2: Convert to fraction form
    84,749.20/127,123.80 = 70,925.20/x
  3. Step 3: Cross multiply
    84,749.20x = 127,123.80 × 70,925.20
  4. Step 4: Simplify right side
    84,749.20x = 9,016,280,939.76
  5. Step 5: Solve for x
    x = 9,016,280,939.76/84,749.20
  6. Step 6: Final answer
    x = 106,387.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.